Not a king snake. They have smooth scales.Rat snakes have keeled scales.
Most likely it’s actually rat snake (also known as corn snake). They’re both constrictors and non-poisonous as they capture reptiles (rats, mice, etc.). Quite commonly found in semitropical and tropical climates. They get to be a good size …like 4-5 feet.
I enjoy seeing them but they are doing the best to avoid humans. My significant other, Maxine, is less appreciative to the point of uttering high-pitched noises that sound like a siren.